SUPER TET SCIENCE QUIZ 15

Question 1:

Which act is right for wildlife protection?

Wild Life (Protection) Act 1972

Wild Life (Protection) Act 1980

Wild Life (Protection) Act 1974

Wild Life (Protection) Act 1963

Question 2:

Which is basic structural and functional unit of life?

Glands

Tissue

Cell

Skin

Question 3:

Which of the following has the largest population in the food chain?

Producers

Decomposers

Secondary consumers

Primary consumers

Question 4:

A boy of mass 40 kg running at 4 m/s jumps on to a 20 kg trolley travelling in the same direction at 1 m/s. What is their common velocity ?

3 m/s

5 m/s

4 m/s

6 m/s

Question 5:

g' (acceleration due to gravity) = ?

$G R^{2} / M$

${GM} / \mathrm{R}^{2}$

$\mathrm{G} / \mathrm{MR}^{2}$

$\mathrm{R}^{2} \mathrm{M} / \mathrm{G}$

Question 6:

In which of the following is a concave mirror used ?

A solar cooker

A rear view mirror in vehicles

A safety mirror in shopping malls

In viewing full size image of distant tall buildings

Question 7:

Work is done on a body only when ________

It experiences an energy-boost through a mechanical effect.

Forces act on it.

There is displacement.

It moves through a certain distance.

Question 8:

A patient's abdomen (alimentary canal) can be examined by X-ray after administering which one of the following metal salts in the patient's meal ?

Barium sulphate

Barium chloride

Strontium sulphate

Magnesium chloride

Question 9:

What is the chemical symbol for arsenic?

$\mathrm{Ac}$

As

An

$\mathrm{Ar}$

Question 10:

Sodium carbonate is used_______.

for bleaching cotton and linen in the textile industry

as an oxidising agent in many chemical industries

to make drinking water free from germs

to remove permanent hardness of water